Carcinoma in situ
Tis
Tumor limited to the true vocal cords with normal mobility
T1
T1a?
Tumor limited to one vocal cord with normal mobility
T1b?
Tumor limited to both vocal cords with normal mobility
T2?
Tumor extends to the supra- or subglottis, and/or with impaired vocal cord mobility
T3?
Tumor limited to the larynx with vocal cord fixation and/or invasion into the paraglottic space and/or partial invasion of the inner cortex of thyroid cartilage
T4a?
Tumor invades through the outer cortex of the thyroid cartilage and/or invades tissues beyond the larynx (trachea, soft tissues of neck, deep extrinsic muscles of tongue, strap muscle, thyroid, esophagus)